Singapore covered with haze as air quality hits unhealthy range

Singapore ’s haze conditions subsided after the city’s air quality reached unhealthy levels in the morning with a layer of smog covering the island. The three-hour pollutant standards index , or PSI, fell to 76 as of 3 p.m. Singapore time, retreating from the day’s peak of 116 at 10 a.m., according to the National Environment Agency. A level exceeding 100 is considered unhealthy, with the government discouraging outdoor physical activities. “The haziness was due to smoke haze from southern Sumatra, blown in by the prevailing southerly winds,” the agency said on its website today, referring to the neighboring Indonesian island. “For the rest of today, the prevailing winds are forecast to blow from the south, and the current hazy conditions are expected to persist.” Singapore and Malaysia have been plagued for decades by periodic haze caused by clouds of ash from the fires i...